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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-10-26 21:56:03 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-01-06 11:30:43 +0100 |
| commit | f860df25cca44957c5c600f912d154bda294be39 (patch) | |
| tree | 63a545edd5dca15be8ad3fd79dd43fc048b7f874 | |
| parent | 56d708c57f1fd4e2582fae98e86b221de67ed321 (diff) | |
| download | ffmpeg-f860df25cca44957c5c600f912d154bda294be39.tar.gz | |
avcodec/g723_1dec: fix invalid shift with negative sid_gain
Fixes: left shift of negative value -1
Fixes: 18395/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_G723_1_fuzzer-5710313034350592
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 1850c3feaa1c7b5b63a55c61075029fa59c84e66)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/g723_1dec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/g723_1dec.c b/libavcodec/g723_1dec.c index f92eb76ba0..d5a8e19f05 100644 --- a/libavcodec/g723_1dec.c +++ b/libavcodec/g723_1dec.c @@ -667,7 +667,7 @@ static int estimate_sid_gain(G723_1_Context *p) if (p->sid_gain < 0) t = INT32_MIN; else t = INT32_MAX; } else - t = p->sid_gain << shift; + t = p->sid_gain * (1 << shift); } else if(shift < -31) { t = (p->sid_gain < 0) ? -1 : 0; }else |